Log-dogging apparatus.



No. 655,573. Patented Aug. 7, I900.

T. J. NEACY.

LOG DUGGING APPARATUS.

(Application filed Mar. 20, 1899.)

2 Sheets-Sheet I,

(No Model.)

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No. 655,573. Patented Aug. 7, I900. T. J. NEACY.

LOQ DOGGING APPARATUS.

(Application filed Mar. 20, 1899.)

2 Shoets-$heet 2,

(No Model.)

UNITED STATES PATENT OFFICE.

THOMAS J. NEAOY, OF MILWAUKEE, W sconsin, ASSIGNOB TO THE FILEE'a STOIVELIJ COMPANY, OF SAME PLACE.

LOG-DOGGING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 655,573, dated August 7, 1900.

Application filed March 20, 1899- Sarial No. 709,732. (No model.)

TO all whom it may concern: The dogging apparatus embodying my in-- Beit known that I, THOMAS J. NEAOY, a citivention is designed for use in connection with zen of the United States, residing at Milwaua log way or slide in which runs an endless 55 kee, in the county of Milwaukee and, State of chain provided with dogs for haulinglogs into Wisconsin, have invented certain new'and a mill and with a crosscut-saw, commonly useful Improvements in Log-Dogging Appaall d a drag-saw.

ratus, of which the following is a specifica- Referring to the drawings, A designates a non, refcrencebeinghad to the accompanying g way or slide, and B a chain provided with 60 drawings, forming a part thereof. dogs I) of the usual or any suitable construc- 10 This invention relates to dogging appara-- tion and arrangement for hauling logs into a tus for holding logs while they are cut to mill. length. Its main objects are to rigidly hold 0 O and C C are jaws arranged in pairs on a log firmly on both sides of the cut, and thus opposite sides of the logway. They are or 65 prevent the severed or partially-severed parts may be of approximately-triangular shape,

from closing and binding upon. the saw, and as shown in Fig. 1, and they are mounted at W to insure the effective engagement of the dogtheir inner lower angles upon shafts D D, jaws on both sides of the cut in dogging irwhich are supported at their ends in boxes regular sized or shaped logs. d d and serve as pivot or fulcrum bearings 70 It consists of certain novel features in the for said jaws. The shafts D, arranged underconstruction and arrangement of component neath and parallel with the logway A, and parts of the apparatus, as hereinafter particuthe boxes d at at each end thereof may be conlarly described, and pointed out in the claims. veniently cast in one piece, as shown in Figs.

In the accompanying drawings like letters 1 and 2. The inner upper portions of the 75 designate the same parts in the several figjaws are preferably curved to correspond ap- 5 proximately with the shape of logs of vary- Figurelis an elevation of myimproved loging sizes and are provided with teeth 0 c to dogging apparatus, certain parts being broken engage with logs and prevent them from slipaway and shown in vertical section, the plane ping or turning when said jaws are closed 80 of the elevation and section cutting the logagainst them. The boxes d 61 may be conway transversely. Fig. 2 is an elevation and veniently mounted upon and carried by cross- Vertical section as viewed from the left with timbers, as shown. reference to Fig. 1, and Fig. 3 is a perspec- E-isahorizontally-disposed lever arranged tive View of the equalizing connections beunderneath and parallel with the jaws G and 85 tween the dog-jaws and the lever by which 0 and hinged or fulcrumed at or near one ey are p ate end at e to a suitable support. This lever In squaring the ends of logs and sawing may be conveniently constructed, as shown them to the desired lengths unless they are in l igs. 2 and 3, of two parallel beams or timfirmly held in place on both sides of the saw bers connected at or near the free or verti- 90 one part when severed or partially severed cally-movable end of the lever by a crossfrom the other is apt to move or settle, so as piece 6. Upon said beams or timbers dito crowd against the saw and cause it to bind, rectly below the pivot or fulcrum shafts D of thus rendering it diiiicult to withdrawit from the dogging-jaws are mounted two parallel the cut and occasioning annoyance and loss equalizing-shafts F F, which are journaled at 5 of time. Under such conditions the saw not their ends in boxesff, attached to said beams.

only works hard, but is liable to buckle and Each of the shafts F is formed or provided be broken or injured, or damage to other parts with arms or ears f f, projecting from oppoof the mill or apparatus or injury to'attendsite sides thereof and connected with the ants is liable to occur. To avoid the oontintwo jaws O O or G C on one side of the log- 10o gency of such troubles and accidents, as well way by links or rods G G. Each of the two as to secure the attainment of the objects jaws on either side of the logway is movable above stated, is the purpose of the construcupon their common supporting-shaft D indetion hereinafter described. pendently of the other, so that one of the jaws may advance or recede relatively to. the other.

II is a vertically-disposed cylinder having a piston fitted therein and connected by its rod 7t and an intermediate link h with the cross-piece e of lever E for raising and lowering the same, and thus simultaneously opening and closing the opposing jaws C C.

Iis a pipe for supplying steam or other fluid-actuating medium to said cylinder.

J is a valve for controlling the admission and release of the actuating medium to and from opposite ends of said cylinder, with which it is connected by branch pipes or passages, as shown in Fig. 1. K is an exhaustpipe leading out of the lower part of said valve. The valve-stem is connected with a lever L, which extends within convenient reach of the operator in charge of the dragsaw.

The arrangement of the various parts of the apparatus may be varied according to the conditions and requirements of different IlllllS-- as, for instance, the cylinder II may be located above the lever E.

The apparatus above described operates as follows: A log being hauled into the mill upon the logway A and stopped in position there on to be cut off at the desired point, which would lie midway between the jaws C C or C C in the plane of the drag-saw, the operator thereupon shifts the lever L into position to admit steam into the lower end of cylinder H and release it from the upper end of said cylinder. The piston being forced upwardly lifts the lever E, which in turn through the equalizing connections hereinbefore described forces the opposing jaws G 0 toward each other into engagement with the intervening log. If the log varies abruptly in size or in shape or has a knot or other projection opposite either jaw which would prevent it from advancing as far as the other jaw on the same side of the logway, the equalizing connections will permit or cause one of the jaws to recede while the other advances until they are both forced into effective engagement with the log and the log is firmly grasped and held by the opposing jaws on both sides of the cut to be made by the dragsaw. In this way either part of the log which may not be firmly supported by the logway adjacent to the cross-cut will be prevented from slipping or settling when severed or partially severed from the other part and crowding against the saw, thus interfering with its proper operation, preventing its withdrawal from the cut, and breaking or injuring the saw or other parts of the mill.

I claim- 1. In apparatus for dogging logs, the combination with a logway and conveyer, of vertically-disposed pivoted jaws arranged on opposite sides of the logwayand movable transversely thereto, a vertically-movable lever connected with said jaws so as to simultaneously close the same upon a log, a cylinder having a fluid-supply connection provided with a controlling-valve, anda piston fitted in said cylinder and connected with said lever, substantially as and for the purposes set forth.

2. In apparatus for dogging logs, the combination with a logway and conveyer of two pairs of opposing jaws arranged in vertical planes on opposite sides of said logway and adapted to grasp a log on opposite sides at difierent points in its length, and means for simultaneously opening and closing said jaws, substantially as and for the purposes set forth.

3. In apparatus for dogging logs, the combination of two pairs of opposing jaws adapted to engage a log on opposite sides and at different points in its length, means for simultaneously closing said jaws against alog, having self-adjusting equalizing connections with said jaws, whereby engagement of both jaws on each side of the log is insured, substantially as and for the purposes set forth.

I. In apparatus for dogging logs, the combination with a logway, of two pairs of opposing jaws arranged on opposite sides of and transversely to said logway, two equalizing-shafts each having oppositely-projecting arms which are respectively connected with the two jaws on one side of the logway, and means for moving said equalizing-shafts toward and from said jaws, substantially as and for the purposes set forth.

5. In apparatus for dogging logs, the combination with a logway, of two pairs of jaws arranged 011 opposite sides thereof and movable transversely thereto, equalizing-shafts each having oppositely-projecting arms which are connected with the jaws on one side of said logway, a vertically-movable lever carrying said equalizing-shafts, and means for raising and lowering said lever, substantially as and for the purposes set forth.

6. In apparatus for dogging logs, the combination with a logway and conveyer, of two pairs of opposing jaws pivoted at their inner lower portions to a suitable support and movable transversely to said logway, equalizingshafts arranged below and parallel with the pivot-bearings of said jaws and each having oppositely-projecting arms which are connected by rods with the jaws on one side of the logway outside of their pivot-bearings, a vertically-movable lever carrying said equalizing-shafts, a cylinder provided with a piston which is connected with and arranged to raise and lower said lever, and valve-controlled fiuid supply and exhaust connections leading to opposite ends of said cylinder, substantially as and for the purposes set forth.

In witness whereof I hereto affix my signature in presence of two witnesses.

THOMAS J. NEACY.

Witnesses:

E. H. BOT'IUM, SHERMAN BROWN. 

